Manufacture of wall paper



Feb. 3, 1925. 1,525,392

H.C.JARYE MANUFACTURE OF WALL PAPER Filed May 17. 1924 INVENTUR.

Patented Feb. 3, 1925.

HERBERT C. JARVIS, 0F TORONTO, ONTARIO, CANADA.

MANUFACTURE OF WALL PAPER.

Application filed May 17, 1924. Serial No. 713,912.

T 0 all whom it may concern:

Be it known that I, HERBERT C.'JARvIs, of the city of Toronto, in the county of York, Province of Ontario, Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in the lvlanufacture of Wall Paper, of which the following is a specification.

In the present invention my objectis to produce a wall paper which is more econoinical to manufacture than present papers of the same quality and which involves less trouble in hanging.

The process of manufacture is illustrated in the accompanying drawings in which- Fig. 1 shows'a part of a strip of wall paper and a printing roller in the act of printing the pattern on the paper;

Fig. 2 a plan view of a modified form of a strip of wall paper produced in accordance with my invention; and

Fig. 3 a diagrammatical side elevation of a printing machine adapted for practicing my invention.

The method generally followed in printing patterned wall papers may be briefly described as follows. The. printing rolls are made so that one side of the imprint will match the other side. It being impossible, however, to guide the strip of paper being printed in exact alinement with the edges of the pattern on the printing rollers, the paper used is wider than the pattern and a selvage is left along each edge of the strip of wall paper. When the paper is being hung, one or both of these selvages are cut off before the paper is hung. This operation requires considerable skill and takes up time, and, further, the selvages are wasted material.

I aim to make it possible to print patterned wall papers either without selvages or with only one selvage. In my prior United States Patent No. 1.387.724, I disclosed and claimed a process of producing such wall paper which consisted in employing a printing roller formed with a repeat pattern and having its printing surface wider than the exposed width of the strip of paper when hung and printing said strip with the printing surface of the roller overlapping one or both edges of the strip, the paper being of a width not less than a suitable repeat of the pattern.

This process produced excellent results with all classes of patterned wall paper but involves the use of new print rollers of greater length than ordinarily employed. A demand therefore exists for a process of producing wall paper without selvages which may be employed with print rollers I of ordinary length.

This result I attain by my making the printing surfaces of the printing rollers substantially equal to one or more transverse repeats of the pattern, and, if dispensing with both selvages, by reducing the width of the strip of paper so that it is less than that of the printing surface of the roller.

This means, of course, that the width of figures of the pattern which, when the. paper is hung, are formed at the junction of two strips partly by one and partly by the other are narrower than similar figures in the body of the strip. It is found, however, that this difference is not noticeable when the pattern is of a more or less indeterminate nature or figures of different rows of vertical repeats differ in size. By employing first class printing machines and exercising great care in running the paper through the machines the reduction in the width of the strip may be made less than one-quarter inch.

In printing a wall paper with one selvage only, I use paper the width of one selvage wider than a paper used for printing without any selvages and guide the paper through the printing machine so that the edge of the printing surface of the roller will overlap one edge of the paper as little as possible, while providing enough overlap to take care of the maximum deviation from exact alinement of the paper and roller likely to occur.

When hanging paper with one selvage, the edge without selvage may be laid over the selvage of the last hung strip and extended over the printed portion to the line where the pattern exactly matches, thus a perfect matching of the design may be obtained, the selvage being entirely covered.

\Vith paper thus printed a great saving of material is effected as well as zrgreat saving of time and labor when the paper is hung. A further advantage is that as the pattern is printed by a printing surface which overlaps the edge or the paper, the printing colors will soak into the edge of the paper and stain this edge, which would otherwise show White. This entirely pre-V vents any white edges showing When the paper is hunggvhich is very apt to happen, particularly with dark papers printed in the ordinary manner With selvage edges, Which are always afterward cut off.

Ifind, however, that in making long runs; some provision must be made to get rid of the printing color deposited on the drum of the printing machine by the projecting ends of the printing rollers. Ordinarily the drums are covered With a porous textile fabric which absorbs the color satisfactorily for limited periods of time but then becomes clogged and spoils the edges of the paper.

I overcome the trouble by providing a flexible endless apron 1 of a material impervious to the printing colors and having asmooth surface, which apron passes round the drum 2 of the machine under the printing rollers 3 and round the idlers 4:. A scraper 5 is yieldingly pressed against the surface of the apron hack of the printing rollers Which scrapes off the printing color applied to the apron and deposits it in a trough 6 provided With a spout 7 Which leads it to any suitable receptacle. Accumulations of color on the apron are thus prevented.

What I claim is 1. A process of printing a strip of wall paper with a repeat pattern which consists in employing a printing roller formed with a repeat pattern and havin' its printing surface wider than the exposed width of the strip of paper When hung and printing said strip with the printing surface of the roller overlapping one edge of the strip,

the paper being of a Width less than a suitable repeat of the pattern.

2. A process of printing a strip of Wall paper which consists in employing a printing roller formed With a repeat pattern and having its printing surface Wider than the exposed width of the strip of paper When hung and printing said strip with the printing surface of the roller overlapping both edges of the stripthe paper being of a Width less than a suitable repeat of the pattern.

A process of printing a strip of wall paper With a repeat pattern which consists in printing the paper against a travelling backing substantially impervious to the colors employed and by means of a print ing roller having its printing surface vidcr than the exposed Width of the strip of paper when hung, the printing surface of the roller overlapping one edge of the strip, and removing more or less continuously the color deposited on the backing.

A process of printing a strip of Wall paper With a repeat pattern Which consists in printing the paper against a travelling backing substantially impervious to the colors employed and by means of a printing roller having its printing surface Wider than the exposed width of the strip of paper when hung, the printing surface of the roller overlapping both edges of the strip, and removing more or less continuously the color deposited on the backing.

Signed at Toronto, Canada, this 7th day of lday 1924-.

HERBERT C. JARVIS. 

